一个用Java实现的Windows资源管理器 - JExplorer.java

// JExplorer.java

package tl.exercise.swing;

 

import java.awt.BorderLayout;

import java.awt.Dimension;

import java.awt.Toolkit;

 

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JSplitPane;

import javax.swing.border.BevelBorder;

 

public class JExplorer {

    public static void main(String[] args) {

        //JFrame.setDefaultLookAndFeelDecorated(true);

        JFrame frame = new JFrame();

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

 

        frame.getContentPane().add(new UI(frame));

 

        frame.pack();

 

        Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();

       int left = (screen.width - frame.getWidth()) / 2;

       int top = (screen.height - frame.getHeight()) / 2;

 

        frame.setLocation(left, top);

 

        frame.setVisible(true);

    }

}

 

class UI extends JPanel {

    //implements I_menuHandler{

    static final long serialVersionUID = 0l;

 

    static int LEFT_WIDTH = 200;

 

    static int RIGHT_WIDTH = 300;

 

    static int WINDOW_HEIGHT = 300;

 

    JFrame frame = null;

 

    public UI(JFrame frame) {

        //EmptyBorder eb = new EmptyBorder(1,1,1,1);

 

        this.frame = frame;

        setPreferredSize(new Dimension(800, 600));

 

        setBorder(new BevelBorder(BevelBorder.LOWERED));

 

        setLayout(new BorderLayout());

 

        FileList list = new FileList();

        FileTree tree = new FileTree(list);

        tree.setDoubleBuffered(true);

        list.setDoubleBuffered(true);

 

        JScrollPane treeView = new JScrollPane(tree);

        treeView.setPreferredSize(

new Dimension(LEFT_WIDTH, WINDOW_HEIGHT));

        JScrollPane listView = new JScrollPane(list);

        listView.setPreferredSize(

new Dimension(RIGHT_WIDTH, WINDOW_HEIGHT));

 

        JSplitPane pane =

new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, treeView,

               listView);

        pane.setDividerLocation(300);

        pane.setDividerSize(4);

        //pane.setDoubleBuffered(true);

 

        add(pane);

    }

}